diff --git a/include/drivers/mmc.h b/include/drivers/mmc.h
index c4c5fea..24a5502 100644
--- a/include/drivers/mmc.h
+++ b/include/drivers/mmc.h
@@ -66,6 +66,7 @@
 #define EXT_CSD_PART_CONFIG_ACC_MASK	GENMASK(2, 0)
 #define PART_CFG_BOOT_PARTITION1_ENABLE	(U(1) << 3)
 #define PART_CFG_BOOT_PARTITION1_ACCESS (U(1) << 0)
+#define PART_CFG_BOOT_PARTITION_NO_ACCESS	U(0)
 #define PART_CFG_BOOT_PART_EN_MASK		GENMASK(5, 3)
 #define PART_CFG_BOOT_PART_EN_SHIFT		3
 #define PART_CFG_CURRENT_BOOT_PARTITION(x)	(((x) & PART_CFG_BOOT_PART_EN_MASK) >> \